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參數(shù)資料
| 型號： | LM1253A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator |
| 中文描述： | 單片三180兆赫的I2C顯像管預(yù)先集成在屏幕顯示（OSD）發(fā)生器模擬放大器 |
| 文件頁數(shù)： | 10/57頁 |
| 文件大小： | 1621K |
| 代理商： | LM1253A |
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Pin Descriptions
(Continued)
Pin 13—Clamp
A positive going clamp signal is input on
this pin. Using this signal black level clamping of the video is
carried out directly on the input video that is AC coupled into
the high impedance preamplifier input, thus eliminating the
need for additional black level clamp capacitors. Figure 29
shows the external schematic of pin 13, Figure 17shows the
internal schematic. An optional capacitor to ground may be
needed if noise interferes with the clamp signal.
Pin 14—H Flyback
H Flyback is an analog signal input from
the monitor horizontal scan. HBLANK is a digital signal de-
rived from the horizontal flyback pulse as shown in Figure 9
An optional capacitor and/or resistor to ground may be
needed if noise interferes with the H Flyback signal.
The horizontal flyback from the monitor must be a clean sig-
nal. There should be no ringing or other noise on the flyback.
DS101265-70
FIGURE 8. Effect of ABL Voltage on V
OUT
L
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM1253AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator |
| LM-1256 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16 x 16 matrix displays |
| LM-1256_1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays |
| LM-1256LB1 | 制造商:ROHM 制造商全稱:Rohm 功能描述:16】16 matrix displays |
| LM125AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:VOLTAGE REGULATORS |
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